12270971 has 2 divisors, whose sum is σ = 12270972. Its totient is φ = 12270970.

The previous prime is 12270959. The next prime is 12271003. The reversal of 12270971 is 17907221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12270971 - 2¹⁸ = 12008827 is a prime.

It is equal to p₈₀₄₆₃₈ and since 12270971 and 804638 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12270911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135485 + 6135486.

It is an arithmetic number, because the mean of its divisors is an integer number (6135486).

Almost surely, 2^12270971 is an apocalyptic number.

12270971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12270971 is an equidigital number, since it uses as much as digits as its factorization.

12270971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12270971 is about 3502.9945760734. The cubic root of 12270971 is about 230.6532844524.

The spelling of 12270971 in words is "twelve million, two hundred seventy thousand, nine hundred seventy-one".